Negotiable

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: 河南海克尔仪器仪表有限公司

Product Description: This instrument complies with the requirements of the United Nations GB/T 21618-2008, "Recommendations on the Transport of Dangerous Goods—Model Regulations," the United Nations "Recommendations on the Transport of Dangerous Goods—Manual of Tests and Criteria," GB 5085.4-2007; GB 19521.1-2004; and NY/T 1860.15-2016 "Guidelines for the Determination of Physical and Chemical Properties of Pesticides."It is suitable for determining the ability of a substance to propagate combustion by igniting the substance and measuring the burning time.The instrument consists of three parts: a display circuit, a control circuit, a sampling detection circuit, and a stacking mold. It uses a high-precision digital infrared temperature sensor to monitor the sample status in real time, automatically records the sample burning time and propagation time, and classifies the substance automatically. It is easy to operate and convenient to use, making it highly suitable for laboratory applications.The instrument can perform automatic screening tests as well as burning rate tests.Technical Parameters:Temperature Detection: Advanced far-infrared digital temperature detection sensorIgnition Method: Advanced DC low-voltage electronic silicon carbide rod ignitionCombustion Path Detection: Six-channel anti-interference far-infrared digital temperature detection sensorsCombustion Distance: 0–250 mm; Measurement Accuracy: ±0.5 mmIgnition Temperature: Not less than 1000°CResult Processing: Results are automatically generated into test reports and can be printed via a connected printerTiming Method: Embedded software timing; Accuracy: 0.1 sTiming Range: Non-metallic: 5 min; Metallic: 20 minStacking Mold: Triangular mold made of aluminum-magnesium alloy, 250 mm long, 10 mm inner height, 20 mm wideUses corrosion-resistant, high-temperature-resistant, low thermal conductivity quartz glass test panelPower Supply: AC220V±10%, 50HzPower: 0.5 kWOperating Environment: Laboratory with ventilation and safety protectionPerformance Features:1. The instrument uses an embedded processor and Windows operating system; a 12-inch LCD screen displays test status in real time.2. The software integrates two functions: "Automatic Preliminary Screening Test" and "Burning Rate Test."3. Equipped with a stacking mold as specified by standards and a user-friendly sample oscillation design.4. Strictly adheres to standard requirements; screening tests use electronic silicon carbide rod ignition without gas cylinders, ensuring safety. High material stability and ignition temperature detection device ensure ignition temperature is not less than 1000°C.5. Fully automated infrared flame detection technology reliably detects open flames and smoldering phenomena, ensuring detection accuracy; includes automatic fault detection for safer testing.6. The entire test process is fully automated without manual intervention, supporting parameter settings, data storage, data viewing, report printing, and other functions.7. The instrument features easy assembly and disassembly, an aesthetically pleasing appearance, reasonable structure, and safe, reliable operation. more>

Negotiable

Category: Chemicals/Oxides/Other Oxides

Company: Changsha Xingkeyuan Instrument Technology Co., Ltd.

Product Description: XKYGF-8000CThermogravimetric AnalyzerScope of ApplicationSuitable for ignition loss testing of chemical raw materials, new materials, building materials, waste, biomass materials, etc., combustible material testing, cement loss on ignition testing, etc.①Analysis of ignition loss (calcination loss) for substances such as alumina, aluminum hydroxide, aluminum fluoride, cryolite, etc.;②Analysis of ignition loss (loss on ignition) for metal minerals such as iron ore, laterite nickel ore, etc.;③Analysis of loss on ignition for cement;④Analysis of ignition loss (loss on ignition) for substances such as limestone, dolomite, etc.Compliant StandardsGB/T32179-2015 "Chemical Analysis of Refractory Materials—General Requirements for Wet Chemical Analysis, Atomic Absorption Spectrometry (AAS), and Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES)"GB/T3286.8-2014 "Methods for Chemical Analysis of Limestone and Dolomite—Part 8: Determination of Loss on Ignition—Gravimetric Method"JB/T 8508 "Electrical Grade Magnesium Oxide"GB 12348 "Noise Standard for Industrial Enterprises Boundary"GB/T13384 "General Technical Conditions for Packaging of Mechanical and Electrical Products"GB/T191 "Pictorial Markings for Packaging, Storage, and Transportation"GB9175 "Classification Standard for Permissible Environmental Electromagnetic Radiation Intensity"GB/T 6609.2-2009 "Method for Determination of Mass Loss of Alumina at 300°C and 1000°C"GB/T 6730.68-2009 "Determination of Loss on Ignition of Iron Ores—Gravimetric Method"GB/T 176-2017 "Methods for Chemical Analysis of Cement—Determination of Loss on Ignition"YS/T 820.26-2012 "Determination of Loss on Ignition of Laterite Nickel Ore—Gravimetric Method"GB/T 3286.8-1998 "Methods for Chemical Analysis of Limestone and Dolomite—Determination of Loss on Ignition"Technical Parameters:Maximum Power: 4.5KWPID temperature control, temperature control range: room temperature +10°C to 1000°CTemperature Control Accuracy: ±2°CResolution: 1°CNumber of Samples: 10 (tested simultaneously)Testing Time: Customizable based on user requirementsAmbient Temperature (Indoor): 0～40°CAmbient Humidity: ≤90%Supply Voltage: 220V ±10%Frequency: 50 Hz±1%Operating Noise: ≤60dBHigh-temperature magnesium oxide ignition loss uSupports built-in calibration function for balance instruments, eliminating the need for professional disassembly for periodic calibration. The balance features thermal insulation protection to ensure a stable and interference-free working environment; buoyancy correction is performed using blank crucibles in the same atmosphere environment to ensure weighing accuracy at different temperatures.uExperiment stability is customizable, with multiple constant temperature and temperature control modes available, catering to users across various industries.uBuilt-in balance data is displayed in real-time on the computer screen, allowing lab technicians to weigh samples more accurately.uRecords and monitors various key data throughout the experiment, automatically alerting in case of abnormalities.uFeatures power-off protection; in case of unexpected power loss or misoperation, the experiment can resume from the state before power loss after power restoration, without discarding samples.uHighly automated; no manual intervention is required during the experiment. The instrument automatically completes the experiment, stores and processes data, and provides multiple report printing formats. Custom report formats are also supported to meet diverse user needs.uAdvanced control mechanism enables automatic opening and closing of the lid, eliminating the need for manual crucible replacement and lid removal, avoiding high-temperature radiation exposure to personnel.uThermal balance and thermogravimetric analysis technology, with calibration using empty crucibles in the same atmosphere environment, ensuring weighing accuracy.uFeatures self-check and safety protection functions, with user-friendly prompts for various faults, facilitating equipment management and maintenance.uNo need for dedicated oxygen or nitrogen preparation; optional use of silent compressed air stations to supply gas, significantly reducing experimental costs. more>

Negotiable

Category: Chemicals/Plastics & Products/Plastic Films

Company: 广州艾浩尔防霉抗菌科技有限公司

Product Description: Add and mix evenly into transparent or opaque plastic pelletsPhysical PropertiesAppearance                    White powderWhiteness                      >90Active Ingredient(%)        Zinc ions and active carrier ≥99%Particle Size                  D90 380°CBulk Density            1.8‐2.4g/cm³Product IntroductionPlastic antibacterial agent is a broad-spectrum antimicrobial with inorganic zinc ion complex as the active component. It is mainly used to protect plastic or rubber products from microbial erosion such as bacteria, and provides surface activity to offer antibacterial effects on the product surface.The plastic antibacterial agent slowly releases zinc ions. Since bacterial surfaces carry a negative charge, the positively charged metal ions are adsorbed onto the bacterial surface, disrupting their electrolyte balance and causing bacterial death due to cell wall damage. Meanwhile, metal ions enter the bacteria and react with cellular enzymes, inhibiting enzyme activity and bacterial reproduction, thereby achieving bactericidal effects.Product Features• Broad-spectrum antibacterial, effectively inhibits the growth of Gram-positive and Gram-negative bacteria;• Inorganic material, heat resistant up to 380°C, stable, long-lasting;• Good anti-discoloration properties, with controlled release rate of metal ions through special processing technology, preventing discoloration during mixing or over time, and excellent UV resistance;• Good dispersibility, no agglomeration, easily disperses in various substrates;• Free of arsenic, tin, and VOCs;• No bioaccumulation, does not cause persistent environmental pollution;• High safety, environmentally friendly, suitable for food contact applications; complies with EU environmental regulations.Product ApplicationsPlastic antibacterial agent is suitable for plastic or rubber products, such as mother and baby products, daily tableware, antibacterial medical devices, antibacterial silicone rubber keyboards, etc.Application InformationApplication % Dosage (based on total weight of final product)Plastics, Rubber 0.8-1%The concentration of antibacterial agent required for protection depends on several factors, including: the system's susceptibility to microbial degradation, the extent of microbial invasion, the type of microorganisms, pH, temperature, humidity, and the required duration of protection.Packaging Specifications10kg/pack. Custom packaging available upon request.Storage and TransportationStore in a cool, dark, sealed, and dry place at room temperature.PrecautionsWhen using this product, wear protective clothing, rubber gloves, and goggles. Avoid contact with skin, eyes, and mucous membranes. Free samples are available for testing support. Technical consultations can be arranged in person within Guangdong Province. more>

Negotiable

Category: Instruments & Meters/Analytical Instruments/Other Analytical Instruments

Company: 有道环境科技（深圳）有限公司

Product Description: This article provides textual and graphical parameter information about the YD-510 environmental-grade X and γ radiation dose rate meter. The detector types include both GM tube and scintillator. It is primarily used in environmental assessment and pre-assessment work, and is also suitable for supervisory departments to conduct on-site inspections during law enforcement, obtaining stable and reliable detection data.The environmental-grade X and γ radiation dose rate meter is a radiation detection instrument with higher sensitivity and stricter certification standards compared to protection-grade dose rate meters.OverviewThe YD-510 Environmental-Grade X and γ Radiation Dose Rate Meter adopts a dual-detector system consisting of a plastic scintillator detector and a GM tube composite detector, featuring high sensitivity and a wide measurement range, enabling accurate measurement of γ-rays and X-rays. It utilizes a high-speed microprocessor and a 3.5-inch color touch LCD screen, making operation more convenient. It is widely used for monitoring and inspection in various X and γ radiation environments, including medical, disease control, environmental protection, metallurgy, petroleum, chemical, radioactive laboratories, industrial non-destructive testing, radiation processing, mining, and more. The instrument fully complies with the sensitivity lower limit and range requirements of JJG521-2006 "χ-γ Radiation Air Kerma (Absorbed Dose) Rate Meter for Environmental Monitoring." The instrument uses a single detector, combining high sensitivity and a wide measurement range, making it suitable for both environmental-grade X and γ dose rate measurement and protection-grade X and γ radiation monitoring.Performance Features■ Equipped with a high-speed embedded microprocessor, ensuring real-time monitoring of data and status;■ Capable of detecting fast X-ray exposure pulses;■ Features a 3.5-inch color touch LCD screen with a fully Chinese operating interface, making it user-friendly and easy to operate;■ Automatically saves cumulative dose data, which is not lost during power failure, and allows manual viewing of alarm records;■ Alarm thresholds for dose rate and cumulative dose can be set arbitrarily;■ Stores up to 4,000 sets of alarm data;■ Provides sound alarms when thresholds are exceeded, with short dead time and high dose rate capability;■ Includes a real-time clock function, displaying the year, month, and day in real time, with no impact on clock operation during power failure.Main Performance IndicatorsDetector3×3 inch plastic scintillator + metal GM tubeEnergy Response20keV-7MeV (plastic scintillator detector), 60keV-3MeV (GM tube detector)Detectable TypesX, γMeasurement RangeDose rate: 10nSv/h-100mSv/h; (optional 10nSv/h-5Sv/h) Cumulative dose: 0-9999mSv.Display Method3.5-inch color touch LCD screenSensitivitySensitivity: >2000cps/(μSv/h) (scintillator detector), >2.0cps/(μSv/h) (GM tube) (137Cs) Relative Intrinsic Error≤±10% (137Cs, 100μSv/h);Response Time5ms.Operating EnvironmentTemperature -25℃～+50℃, relative humidity (at 40℃) ≤95%.Power Supply7.4V rechargeable lithium battery, real-time battery voltage detection, battery icon flashes to remind when voltage is lowHousingFull aluminum alloy structure, robust and durable overall design;Weight and DimensionsApproximately 4Kg (excluding battery); main unit 80×120×40mm, detector φ80×335mm (excluding bracket). more>

Negotiable

Category: Instruments & Meters/Specialized Instruments/Other Specialized Instruments

Company: 有道环境科技（深圳）有限公司

Product Description: The YD-230 X and γ Radiation Dose Rate Meter/Radiation Inspection Meter uses a plastic scintillator detector, featuring high sensitivity and a wide measurement range, enabling accurate measurement of γ-rays and X-rays. It is widely used for monitoring and inspection in various X and γ radiation environments such as healthcare, disease control, environmental protection, metallurgy, petroleum, chemical industry, radioactive laboratories, industrial nondestructive testing, radiation processing, and mining.The YD-230 X and γ Radiation Dose Rate Meter/Radiation Inspection Meter uses a plastic scintillator detector, featuring high sensitivity and a wide measurement range, enabling accurate measurement of γ-rays and X-rays. It is equipped with a high-speed microprocessor and a 3.5-inch color touch LCD screen, making operation more convenient. It is widely used for monitoring and inspection in various X and γ radiation environments such as healthcare, disease control, environmental protection, metallurgy, petroleum, chemical industry, radioactive laboratories, industrial nondestructive testing, radiation processing, and mining. The instrument meets the requirements of JJG 393-2018 for portable X and γ radiation ambient dose equivalent (rate) meters and monitors. It uses a single detector with both high sensitivity and a wide measurement range, making it suitable for use as both an environmental X and γ dose rate meter and a protection-level X and γ radiation meter.Performance Features■ Equipped with a high-speed embedded microprocessor, ensuring real-time monitoring data and status;■ Capable of monitoring fast X-ray exposure pulses;■ Features a 3.5-inch color touch LCD screen with a full Chinese operation interface, making it easy to use and operate;■ Automatically saves cumulative dose data, which is not lost during power failure, and allows manual viewing of alarm records;■ Alarm thresholds for dose rate and cumulative dose can be set arbitrarily;■ Stores 4000 sets of alarm data;■ Displays units in uSv/h and uGy/h;■ Includes a real-time clock function, displaying the year, month, and day in real time, with no impact on clock operation during power failure.Main Performance IndicatorsDetector2×2 inch plastic scintillator + photomultiplier tubeEnergy Response30keV-7MeVDetectable TypesX, γMeasurement RangeDose rate: 30nSv/h-10mSv/h; Cumulative dose: 0-9999mSvDisplay Method3.5-inch color touch LCD screenSensitivitySensitivity: >1200cps/(μSv/h) Relative Intrinsic Error≤±10% (137Cs, 100μSv/h);Response Time30msOperating EnvironmentTemperature: -25℃ to +50℃; Relative humidity (at 40℃) ≤95%Power Supply7.4V rechargeable lithium battery, with real-time battery voltage detection and low-voltage flashing icon reminderHousingFull metal structure, robust and durable overall design;Weight and DimensionsApproximately 1.3kg (without battery); 400×230×125mm more>

Negotiable

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Zhongke Yishuo (Xiamen) Quality and Technical Service Co., Ltd

Product Description: ASTM E1354 Heat Release Scope of Application:This fire test application standard is used to measure the behavior of materials under controlled levels of radiant heat, with or without an external igniter.ASTM E1354 Test Data:This test method is used to determine the flammability, heat release rate, mass loss rate, effective heat of combustion, and visible smoke production of materials and products.ASTM E1354 Data Influencing Factors:The heat release rate is determined by measuring oxygen consumption based on oxygen concentration and exhaust flow rate.The effective heat of combustion is determined by combining the measured specimen mass loss rate with the heat release rate.Smoke obscuration is measured by the light blockage of combustion product streams.ASTM E1354 Test Principle:The specimen should be tested at an initial heat flux ranging from 0 to 100 kW/m². When external ignition is used, an electric spark igniter should be employed. The value of the initial heat flux and the use of external ignition shall be in accordance with the relevant material or performance standards (see X1.2). The normal specimen orientation is horizontal, regardless of whether the end-use application is horizontal or vertical. The apparatus also includes provisions for vertical orientation testing; this is only for exploratory or diagnostic studies.ASTM E1354 Standard Name:ASTM E1354 Standard Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption CalorimeterASTM E1354 Method for Determining Heat and Smoke Release Rates of Materials by Oxygen ConsumptionSignificance of Determining Material Heat Release by Oxygen Consumption:This test method is primarily used to determine the heat evolved or contributed by the tested material products in a fire. It also includes determining the effective heat of combustion, mass loss rate, duration of sustained flaming, and smoke production. These properties are determined on small-scale specimens that represent the intended end-use applications. more>

$2000

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Dazhou Jianjie New Materials Technology Co., Ltd.

Product Description: Return fines briquetting binder dosage 3%, forming rate over 90%Sinter return fines are solid waste generated during the steel plant sintering process, which can be pressed and reusedHenan Jianjie's return fines binder features low dosage, high forming rate, and good strength Already used in major steel plants, welcome to contact us more>

$4800

Category: Chemicals/Dyes/Organic Dyes

Company: Henan Sicheng Grinding Technology Co., Ltd.

Product Description: Red Wine Brown/Tan Glass Bottle Coloring Pigment Chromite Powder 200 Mesh 75 Micron 97% Pass Rate       Red Wine Brown/Tan Glass Bottle Coloring Pigment Chromite Powder 200 Mesh 75 Micron 97% Pass Rate is a coloring agent for green, coffee, brown, and tan glass. Chromite powder, also known as chrome ore powder, is typically available in models 325# and 200#. It is produced by ball milling chrome ore sand with 46% chromium content for 24 hours, achieving a 97% pass rate. In industrial production, natural 200# chromite powder is more cost-effective than other chromium-containing pigments and is commonly used for coloring wine bottles and beer bottles in green and tan shades. It can also be added to machine-embroidered glass seed beads used in apparel and accessories based on color requirements.Advantages of Chromite Powder as a Coloring Agent:1. Reduces the cost of producing green or tan glass products.2. Minimizes pollution from chemical coloring agents.Red Wine Brown/Tan Glass Bottle Coloring Pigment Chromite Powder 200 Mesh 75 Micron 97% Pass RateChemical Composition (%):Cr2O3 (Chromium Oxide)Not less than 46.0SiO2 (Silicon Dioxide)Not more than 1.0FeO (Iron Oxide)Not more than 26.5*aO (Calcium Oxide)Not more than 0.3MgO (Magnesium Oxide)Not more than 10AL2O3 (Aluminum Oxide)Not more than 15.5P (Phosphorus)Not more than 0.003S (Sulfur)Not more than 0.003Cr / Fe (Chromium to Iron Ratio)1.55:1Red Wine Brown/Tan Glass Bottle Coloring Pigment Chromite Powder 200 Mesh 75 Micron 97% Pass RatePhysical Properties:Mohs Hardness5.5-6Melting Point2180 ℃Sintering Temperature＞1800℃Specific Gravity4.0-4.8 g/cm3Bulk Density (LPD):2.5-3 g/cm3ColorBlackpH Value7-9Percentage of Free Acid in Chrome Ore Sand0%Acid Content≤2MLSoil Content≤0.1Moisture Content≤0.1Specifications for Chromite Powder Used as Coloring Agent:180 Mesh-0, 200 Mesh-0, 325 Mesh-0, 400 Mesh-0Red Wine Brown/Tan Glass Bottle Coloring Pigment Chromite Powder 200 Mesh 75 Micron 97% Pass RateParticle Size Distribution:+200# (75um)1.8%-200# (75um)98.2% more>

$999

Category: Instruments & Meters/Specialized Instruments/Chemical Instruments

Company: Shenzhen Hezhong Zhida Technology Co., Ltd.

Product Description: In the context of the integration of smart grids and Internet of Things (IoT) technology, the 4G wireless prepaid time-of-use smart meter (hereinafter referred to as the "4G smart meter"), as an emerging energy measurement and management solution, is reshaping the patterns of electricity consumption. This article will delve into the technical characteristics, working principles, and important role of the 4G smart meter in modern energy management.Definition and PrinciplesThe 4G smart meter is an advanced metering device that integrates a 4G wireless communication module, a prepaid mechanism, and time-of-use billing functionality. By monitoring users' electricity usage in real-time and leveraging the 4G network for instant data transmission, it enables power companies to accurately grasp electricity consumption data while allowing users to recharge remotely and flexibly pay for electricity based on different time-of-use rates.Core Technologies and Advantages1. 4G Wireless CommunicationThe adoption of 4G communication technology ensures a high-speed and stable connection between the meter and the power company's servers, supports rapid transmission of large data volumes, reduces data latency, and enhances system reliability.2. Prepaid MechanismThe prepaid function transforms the traditional postpaid model, requiring users to recharge in advance to use electricity. This effectively reduces the risk of unpaid bills while providing users with more flexible payment methods and enhancing self-control over electricity usage behavior.3. Time-of-Use Billing StrategyThe 4G smart meter can implement time-of-use billing, where different electricity rates are set for different time periods. This encourages users to consume more electricity during off-peak hours, helping to shave peak loads and optimize grid load distribution.4. Real-Time Monitoring and Remote ManagementThe meter can monitor electricity consumption in real-time, support remote data reading and device management, and allow power companies to remotely update tariffs and diagnose faults, thereby reducing operational costs and improving service efficiency.Implementation Significance and ChallengesImplementation Significance- Energy Efficiency: Time-of-use billing guides users to reasonably arrange electricity consumption, reducing peak load and promoting efficient energy utilization.- Financial Security: The prepaid model effectively avoids issues of unpaid electricity bills, safeguarding the financial health of power companies.- Intelligent Management: Real-time data transmission and remote control capabilities enhance the intelligence level of grid management and improve emergency response capabilities.Challenges- User Acceptance: Educating users to understand and accept the new billing model and prepaid concept is key to the promotion process.- Network Security: Ensuring the security of 4G communication links to prevent data leakage or tampering is a critical issue that must be addressed during implementation.ConclusionThe 4G wireless prepaid time-of-use smart meter represents an innovative trend in modern energy management. It not only enhances the flexibility and efficiency of electricity usage but also promotes the intelligent transformation of the grid. With the continuous evolution of technology and increasing societal awareness of smart grids, the application prospects of 4G smart meters will become even broader, laying a solid foundation for building a sustainable energy system. more>

Negotiable

Category: Chemicals/Amines/Cyclohexylamine

Company: Zhongke Yishuo (Xiamen) Quality and Technical Service Co., Ltd

Product Description: 1.Test PrincipleThe ISO 5660 standard is an important standard used to measure combustion characteristics such as the heat release rate of materials during combustion. Heat release rate (HRR) refers to the amount of heat released per unit time when a material burns under specified test conditions. For PVC wall panels, measuring their heat release rate can assess their combustion performance in a fire.The test principle is based on the oxygen consumption principle. During combustion, there is a proportional relationship between the heat released and the amount of oxygen consumed. Generally, the heat released per unit mass of oxygen consumed is approximately constant (about 13.1×10³ kJ/kg). By accurately measuring the oxygen consumption during combustion, the heat release rate can be calculated.ØISO 5660-1 Reaction to fire tests—Heat release, smoke production, and mass loss rate—Part 1: Heat release rate (cone calorimeter method) / ISO 5660-1 Reaction to fire tests—Heat release, smoke production, and mass loss rate—Part 1: Heat release rate (cone calorimeter method)2.Test EquipmentThe ISO 5660 heat release rate is tested using a cone calorimeter, which is the core equipment for the ISO 5660 test. It mainly consists of a combustion chamber, sample holder, ventilation system, oxygen analyzer, weighing system, and data acquisition system.The combustion chamber provides a controlled combustion environment, the sample holder is used to secure the PVC wall panel sample, and the ventilation system ensures the supply of air required for combustion and removes combustion products. The oxygen analyzer can accurately measure changes in oxygen concentration during combustion, the weighing system records the mass loss of the sample during combustion, and the data acquisition system collects and processes various test data, such as heat release rate and mass loss rate.3.Test Sample PreparationThe sample dimensions should comply with the requirements of the ISO 5660 standard. Generally, PVC wall panel samples are typically 100mm × 100mm in size, with the thickness based on the actual wall panel thickness, but the flatness and consistency of the sample must be ensured.Multiple samples are usually required to ensure the reliability and repeatability of the test results.4.Sample PretreatmentBefore testing, the samples need to be pretreated, such as conditioning them to constant weight under standard environmental conditions (temperature 23°C ± 2°C, relative humidity 50% ± 5%), to eliminate the influence of moisture and other volatile components in the sample on the test results.5.Test ProcedureMount the specimen horizontally under a radiation cone with a specific radiant flux, insert the spark plug, and ignite the igniter.Data collection is stopped under the following conditions:a)Continuous combustion for 32 minutesb)The specimen fails to ignite within 30 minutesc)The specimen mass becomes zerod)XO2 returns to within 0.01% of the pre-test oxygen concentration value for 10 minutes more>

Negotiable

Category: Chemicals/Amines/Cyclohexylamine

Company: Zhongke Yishuo (Xiamen) Quality and Technical Service Co., Ltd

Product Description: 1.Test PrincipleThe ISO 5660 standard is an important standard used to measure combustion characteristics such as the heat release rate of materials during the combustion process. Heat Release Rate (HRR) refers to the amount of heat released per unit time when a material burns under specified test conditions. For PVC wall panels, measuring their heat release rate can assess their combustion performance in a fire.The test principle is based on the oxygen consumption principle. During combustion, there is a proportional relationship between the heat released and the amount of oxygen consumed. Generally, the heat released per unit mass of oxygen consumed is approximately constant (about 13.1×10³ kJ/kg). By accurately measuring the oxygen consumption during combustion, the heat release rate can be calculated.ISO 5660-1 Reaction to fire tests—Heat release, smoke production and mass loss rate—Part 1: Heat release rate (cone calorimeter method)2.Test EquipmentThe ISO 5660 heat release rate is tested using a cone calorimeter, which is the core equipment for ISO 5660 testing. It mainly consists of a combustion chamber, sample holder, ventilation system, oxygen analyzer, weighing system, and data acquisition system.The combustion chamber provides a controlled burning environment, the sample holder is used to secure the PVC wall panel sample, and the ventilation system ensures the supply of air required for combustion and removes combustion products. The oxygen analyzer accurately measures changes in oxygen concentration during combustion, the weighing system records the mass loss of the sample during combustion, and the data acquisition system collects and processes various test data, such as heat release rate and mass loss rate.3.Test Sample PreparationThe sample dimensions should comply with the requirements of the ISO 5660 standard. Generally, PVC wall panel samples are typically 100mm×100mm in size, with the thickness based on the actual wall panel thickness, but the flatness and consistency of the samples must be ensured.Multiple samples are usually required to ensure the reliability and repeatability of the test results.4.Sample PretreatmentBefore testing, the samples need to be pretreated, such as conditioning them to a constant weight under standard environmental conditions (temperature 23°C±2°C, relative humidity 50%±5%), to eliminate the influence of moisture and other volatile components in the samples on the test results.5.Test ProcedureMount the sample horizontally under a radiation cone with a specific radiant flux, insert the spark plug, and ignite the igniter.Data collection is stopped under the following conditions:a)Continuous combustion for 32 minutesb)The sample does not ignite within 30 minutesc)The sample mass becomes zerod)XO2 returns to within 0.01% of the pre-test oxygen concentration value for 10 minutes more>

Negotiable

Category: Instruments & Meters/Testing Machines/Other Testing Machines

Company: 西安力创材料检测技术有限公司

Product Description: Xi'an LETRY specializes in the production of electronic slow strain rate high-temperature high-pressure hydrogen embrittlement stress corrosion testing machines. These machines are primarily used to accurately determine the susceptibility of metals to sulfide-induced stress corrosion cracking under H2S conditions. They can also be employed for testing and researching the mechanical properties of metal materials, such as static sustained tensile, creep, and stress corrosion tests. They are suitable for determining the stress corrosion failure characteristics of metals in various media environments, including NaOH, NO3-, H2S, Cl- solutions, methanol, N2O4, NH3, humid air, and water.They provide an accelerated testing method to determine the stress corrosion sensitivity of ductile materials under conditions where stress corrosion cannot be rapidly induced through constant load or constant deformation testing methods.Main technical specifications and parameters:1. Maximum test force: 50kN2. Test force range: 1--100%, full range without grading3. Accuracy class: Grade 1; indication accuracy better than ±1%4. Equipped with threaded connection fixtures (two types) and pin-type connection fixtures with automatic centering devices;5. Speed accuracy better than ±1%, indication accuracy better than ±1%, deformation and displacement accuracy better than ±0.5%.6. The tensile speed for slow strain rate tests can be continuously adjusted between 10-6 and 1mm/min.7. Test tensile space: 0-400mm, adjustable test space8. Test control methods: force, time, loading rate, step (multi-stage) loading9. Test environment control temperature: room temperature to 300°C10. Reactor pressure capacity: 10MPaThe fracture speed lies between pure corrosion and pure mechanical failure, with fractures generally being brittle. Hydrogen embrittlement (HE), also known as hydrogen-induced cracking or hydrogen damage, is a phenomenon where hydrogen in metal materials leads to reduced plasticity, cracking, or damage. The corrosive medium is specific, and stress corrosion fracture only occurs under certain metal-medium combinations. Without stress, the corrosion rate of metals in their specific corrosive media is minimal. more>

Negotiable

Category: Instruments & Meters/Testing Machines/Other Testing Machines

Company: 西安力创材料检测技术有限公司

Product Description: The phenomenon of brittle fracture in metallic materials caused by the combined action of hydrogen and stress is referred to as hydrogen embrittlement fracture. Stress corrosion and hydrogen embrittlement often occur simultaneously. Therefore, it is difficult to clearly distinguish between stress corrosion and hydrogen embrittlement from a mechanistic perspective. However, from a prevention standpoint, distinguishing them is highly necessary.Hydrogen embrittlement typically manifests as delayed fracture under stress. There have been instances where zinc-plated components such as screws, washers, springs, and leaf springs fractured successively within hours after assembly, with a fracture rate reaching 40% to 50%. Hydrogen does not cause significant corrosion to steel under normal temperature and pressure, but when the temperature exceeds 300°C and the pressure is above 30MPa, hydrogen embrittlement—a type of corrosion defect—can occur, especially under high-temperature conditions.The electronic slow strain rate high-temperature high-pressure hydrogen embrittlement stress corrosion testing machine, developed by Xi'an Lichuang Material Testing Technology Co., Ltd., is primarily used to accurately determine the sensitivity of metals to sulfide-induced stress corrosion cracking under H2S exposure. It can also be employed for testing and researching the mechanical properties of metallic materials, such as static persistent tensile strength, creep, and stress corrosion. It is suitable for determining the stress corrosion failure characteristics of metals in environments containing NaOH, NO3-, H2S, CL- solutions, methanol, N2O4, NH3, humid air, water, and other media.Main technical specifications and parameters:1. Maximum test force: 50kN2. Test force range: 1--100% full range without grading3. Accuracy class: Grade 1; indication accuracy better than ±1%4. Equipped with threaded connection fixtures (two types) and pin-type connection fixtures with automatic centering devices;5. Speed accuracy better than ±1%, indication accuracy better than ±1%, deformation and displacement accuracy better than ±0.5%.6. The tensile speed for slow strain rate tests can be continuously adjusted between 10-6 and 1mm/min.7. Test tensile space: 0-400mm, adjustable test space8. Test control methods: force, time, loading rate, step (multi-stage) loading9. Test environment control temperature: room temperature to 300°C10. Reactor withstand pressure: 10MPaSince hydrogen embrittlement is related to the diffusion of hydrogen atoms, and diffusion requires time—with its speed depending on concentration gradient, temperature, and material type—hydrogen embrittlement typically manifests as delayed fracture. Currently, fractures in elastic fasteners caused by delayed hydrogen embrittlement naturally represent a serious product quality issue. Various techniques can be adopted to reduce and prevent hydrogen embrittlement in elastic fasteners. more>